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Old 07-27-05, 09:18 PM   #1
Oni
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Adjusting a Truing Stand

I need to figure out how to adjust my truing stand arms so that the right arm doesn't contact the rim before the left. I know it can be done, because while screwing around with it I switched the offset from the left arm to the right and now I need to center it. I'm using a Park TS-2. Any suggestions?
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Old 07-28-05, 06:16 AM   #2
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Have at it:

http://www.parktool.com/repair_help/FAQts2.shtml
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Old 07-28-05, 02:39 PM   #3
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Adjust the caliper arm to center a 130mm spaced wheel. Narrower spaced wheels won't center on a TS-2.

I wrote a long explanation for why this is true but I "timed out" and my message was lost.

Al
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Old 07-29-05, 09:48 AM   #4
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Quote:
Originally Posted by Al1943
Adjust the caliper arm to center a 130mm spaced wheel. Narrower spaced wheels won't center on a TS-2.

I wrote a long explanation for why this is true but I "timed out" and my message was lost.

Al
Do you find that the centering varies somewhat between 130mm and 135mm hubs, or between rims of different widths? Mine seems to, although it's not actually centered at all right now, so maybe doing that would fix the whole issue.
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Old 07-30-05, 10:17 AM   #5
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Quote:
Originally Posted by juicemouse
Do you find that the centering varies somewhat between 130mm and 135mm hubs, or between rims of different widths? Mine seems to, although it's not actually centered at all right now, so maybe doing that would fix the whole issue.
I don't have any 135mm hubs so haven't tried that.
I don't see that the rim's width would make a difference unless it has an off-center design, and I don't have any of those either.
I make only very small adjustments to the caliper arm centering and only with a 130mm wheel on the stand. I reverse the wheel on the stand several times while truing to confirm proper dish.
With front wheels I set all spokes to the same tension and then make small truing adjustments.

Al
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Old 07-30-05, 10:37 AM   #6
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The problem with using the calipers on a TS-2 to center wheels with various spacing is that the angle of the uprights changes as the span changes to accept wheels with different spacings. At 130mm the uprights are approximately perpendicular to the wheel axle and flush with the axle locknuts. When adjusted down to 100mm for a front wheel the uprights are not flush to the locknuts and due to the difference in size and shape of the locknuts the wheel will be pushed to one side or the other.

If you checkout a TS-3 truing stand you'll see that it is designed to keep the uprights parallel and perpendicular to the axle as the span is adjusted. I think Park needs to give up on their TS-2 and lower the price of the TS-3. The TS-2 just has too many design flaws.

Al
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Old 07-30-05, 05:11 PM   #7
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Quote:
Originally Posted by Al1943
The problem with using the calipers on a TS-2 to center wheels with various spacing is that the angle of the uprights changes as the span changes to accept wheels with different spacings. At 130mm the uprights are approximately perpendicular to the wheel axle and flush with the axle locknuts. When adjusted down to 100mm for a front wheel the uprights are not flush to the locknuts and due to the difference in size and shape of the locknuts the wheel will be pushed to one side or the other.

If you checkout a TS-3 truing stand you'll see that it is designed to keep the uprights parallel and perpendicular to the axle as the span is adjusted. I think Park needs to give up on their TS-2 and lower the price of the TS-3. The TS-2 just has too many design flaws.

Al
Interesting. I'll have to keep that in mind for the future.
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Old 08-26-08, 03:59 AM   #8
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New link ...

Quote:
Originally Posted by juicemouse View Post
The link looks to be out of date.

This one should work - currently:

http://www.parktool.com/repair/readi...ons.asp?id=135
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Old 08-26-08, 08:41 AM   #9
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The link looks to be out of date.

This one should work - currently:

http://www.parktool.com/repair/readi...ons.asp?id=135
Uh, dude, I think that whole thread is out of date. 2005 was a long time ago, like before the Internet almost!
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Old 08-26-08, 09:09 AM   #10
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Quote:
Originally Posted by Al1943 View Post
If you checkout a TS-3 truing stand you'll see that it is designed to keep the uprights parallel and perpendicular to the axle as the span is adjusted. I think Park needs to give up on their TS-2 and lower the price of the TS-3. The TS-2 just has too many design flaws.

Al
I noticed this as well with the TS-2 and 100mm hubs. This is a pain because even if the wheel is perfectly dished, one or the other of the spring loaded caliper arms will be rubbing against the rim (also a pain when you're just starting a 130-135mm wheel and it isn't dished yet). It would be nice if there were an easy way to lock one or the other of the arms back out of the way so you can use it as a single-sided truing stand and also decide which of the two arms you want to use as the reference. I suppose you could tie one back with a piece of wire or a cable tie or something.
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Old 08-26-08, 10:38 AM   #11
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I gave up on trying to adjust the TS-2 for anything other than 130 mm spaced wheels. For front wheels I set all spokes at the same tension, then make minor adjustments for radial and lateral true using either caliper but not both. To check dish I just flip the wheel on the stand and compare the fit between the rim and the calipers.
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Old 08-26-08, 12:03 PM   #12
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Uh, dude, I think that whole thread is out of date. 2005 was a long time ago, like before the Internet almost!
You sure wonīt believe it, but there are people who use the "search" function instead of asking the same questions over and over.

So now the next time one of these persons will found this thread will get a fresh link instead of the old and stale one.
Isnīt this simply wonderful?
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Old 08-26-08, 12:05 PM   #13
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Quote:
Originally Posted by Al1943 View Post
I gave up on trying to adjust the TS-2 for anything other than 130 mm spaced wheels. For front wheels I set all spokes at the same tension, then make minor adjustments for radial and lateral true using either caliper but not both. To check dish I just flip the wheel on the stand and compare the fit between the rim and the calipers.
Actually I have no TS-2 but a Cyclus, made in Tschec. Republic.
From a guy who used both -and some more like Minoura and Pedros- I got the hint that this one has a lesser tendency to go out of center. Since Iīm playing with it only since a few days now I cannot tell yet...
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Old 08-27-08, 12:20 AM   #14
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I used to just flip the wheel, I suppose that's crazy. I have a Var truing stand in the basement, talk about a nightmare. I would love to have a TS2. Is there really such a thing as a TS3? I don't see it on their website.
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